PRELIMINARY DATA
JAN. 2003
OVERVIEW
The C8679 is a data acquisition module for the multianode photomultiplier tube(PMT) H7546A. It simultaneously
converts analog signals from 64 channels into digital output in serial order.
OPERATIONAL PRINCIPLE
The C8679 is specially designed for collecting signals from H7546A which incorporates a photomultiplier tube with 64
channel (ch) multianode and its divider circuit. The module can eliminate troublesome work of constructing data
acquisition system from users for multianode PMTs.
The module consists of an FEC (front end card), an adaptor board and an ADC board with PCI interface (refer to the
block diagram in the rear page). The FEC has 64 sets of a charge amplifier, a waveform shaper and a sample & hold
circuit, and has a multiplexer as well.
The FEC needs a trigger signal for its operation. The user can select either self-trigger mode or external-trigger mode. In
the case of self-trigger mode, the trigger signal is automatically generated inside the FEC. It's suitable for periodical
signal detection.
The FEC starts integrating analog signals for all of 64 ch simultaneously after a trigger signal is generated. The
integration is continued for 1
s (it's named sampling time in this data sheet). Those analog signals are stored in the
sample & hold, and then are transferred to the adaptor board in serial order through the multiplexer.
Those signals are amplified by the adaptor board, and then are transferred to the ADC board, which is installed in a
personal computer (PC) (the PC isn't included in this module). The ADC converts those analog signals into digital
outputs. It takes about 100
s to obtain the digital output for 64 ch after the trigger is fed, when the clock frequency of
the ADC is set at 1.25 MHz. The maximum sampling rate is therefore 10 kHz.
The data acquisition of this readout module is operated with LabVIEWTM. The software with basic signal processing is
attached together. This readout module was developed with IDE AS, which is a reading company of ASIC chips for
variety of photodetectors.
FEATURE
SPECIFICATION
G High speed
G Compact
G Data acquisition with PC
APPLICATION
G Radiation imaging
G Multichannel and high speed data acquisition
Sampling Time
Maximum Charge
Noise
Dynamic Range
Clock Frequency
Readout Speed
Sampling Rate
ADC Resolution
1
s (all channels at same time)
(accumulate analog signal for 1
s after triggered)
20 pC (1.25
10
8
electrons)
2.5
10
5
electrons
500
1.25 MHz
100
s/64 ch
10 kHz max. (for all 64 ch)
12 bit
READOUT MODULE C8679
(for 64 ch Multianode PMT H7546A)
PMT (H7546A) is not included
Information furnished by HA MAM ATS U is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein.
2003 Hamamatsu Photonics K.K.
Subject to local technical requirements and regulations, availability of products included in this promotional material may var y. Please consult with our sales office.
Parameter
Description/Value
READOUT MODULE C8679 (for 64 ch Multianode PMT H7546A)
TPMO1025E01
JAN. 2003 IP
TPMOC0170EA
TPMOC0171EA
HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: usa@hamamatsu.com
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: info@hamamatsu.de
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: infos@hamamatsu.fr
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: info@hamamatsu.co.uk
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: info@hamamatsu.se
Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: info@hamamatsu.it
WEB SITE http://www.hamamatsu.com
Block Diagram of C8679 (Readout Module for H7546A)
Circuit Block Diagram of the FRONT END CARD
ANALOG
OUT
MUL
TIPLEXER
Sample
and
hold
Shaper
Pre Amp
CH 1
Sample
and
hold
Shaper
Pre Amp
CH 2
Sample
and
hold
Shaper
Pre Amp
CH 64
Serial output
Parallel input
( ): Dimensions / Unit: mm
H7546A
(100
40 35)
(H7546A is sold separately)
(Sold separately)
(Sold separately)
(170
120 25)
(PCI board full size)
HIGH VOLTAGE
POWER SUPPLY
DC VOLTAGE
POWER SUPPLY
TRIGGER
5 V
FLAT CABLE
SCSI CABLE
ADC BOARD for PC *
ADAPTOR BOARD with TRIGGER
H7546A + FRONT END CARD
HIGH VOLTAGE CABLE
EXTERNAL
TRIGGER INPUT
DC VOLTAGE
INPUT
DC VOLTAGE CABLE
...Supplied
*: Simple operating software, based on LabVIEWTM, is attached.
Windows
98 is recommended for its operating system.
(LabVIEWTM is a trade mark of National Instruments in the US and other countries)
(Windows
is a registered trademark of Microsoft Corporation in the United States and/or other Countries.)
Peaking time
Readout time
Sampling Rate
= 1
s
= 100
s/64 ch
= 10 kHz for all 64 ch
Front End
Card with
ASIC Chip
<function>
Level Shifter
Analog Buffer
National Instruments
PCI-6111E
(or equivalent)
PDF 
ZIP